I use PureRAW and I also create lens profiles for Lensfun. PureRAW has a profile for my old Sigma 500/4.5 APO EX DG HSM. It names it incorrectly in Exif after exporting dng files.
I created a profile for Lensfun and this lens. darktable will need to be pointed to the right lens in .exiv2 but after that it will find the right lens and shows the right model name.
Can’t tell the difference between the profile from DxO vs my profile.
Lensfun project needs better maintenance, but if a user wants a profile the user could create the profile the same day. For Canon RF 16/2.8 STM the first profile published was from Canon. The next profile from me for everyone using Lensfun. After that DxO and the last one was Adobe. I believe Capture One still doesn’t have a profile for this lens.